HUBBLE SPACE TELESCOPE
DAILY REPORT #1231
PERIOD COVERED: 0000Z
Daily Status Report as of 269/0000Z.
1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:
1.1 Completed Three Sets of WF/PC-2 5446 (The Nuclei of Nearby S0 and
Spiral Galaxies: A PC Snapshot Imaging Survey)
The WF/PC-2 was used to make observations of the core regions of
galaxies NGC-4818, NGC-1313, NGC-1515, and NGC-949 to provide
statistics on the nuclear cups, stellar condensations, and inner
stellar disks and dust lanes. The observations were executed as
scheduled, and no anomalies were noted.
1.2 Completed WF/PC-2 5562 (Cycle 4 Calibration: Internal Monitor 3:
Darks)
The WF/PC-2 was used to obtain several 30-minute long, dark
exposures
to provide ongoing calibration of the CCD dark current and to
monitor
and characterize the evolution of hot pixels. The observations were
executed as scheduled, and no anomalies were noted.
1.3 Completed FGS 5174 (Astrometric Companion Search - Cycle 4)
FGS #3 was used to make astrometric observations of the possible
binary dwarf star W1062 to look for an astrometric unseen low mass
companion. The OSS monitored the observations and assessed the data
quality. No anomalies were noted.
1.4 Completed WF/PC-2 5663 (Cycle 4 Photometric Calibration Monitor 1:
UV/OPT STD)
The WF/PC-2 was used to make observations of globular cluster
NGC-6752
with various filters in order to check the photometric calibration
of
the WF/PC-2. The observations were completed as planned, and no
anomalies were reported.
1.5 Completed Two Sets of FOS/BL 5346 (Fundamental Evolutionary
Parameters of B-Supergiants in the Post Main)
The FOS (Blue Side) was utilized to look at the predicted gap in the
H-R diagrams of SK-69D43 and SK-67D14 to see if they are filled with
early B supergiants. The instrument will obtain high S/N spectral
data of four early B supergiants in the LMC to discriminate between
various evolutionary scenarios and to constrain new stellar
evolution
scenarios. There were no reported operational errors.
1.6 Completed WF/PC-2 5584 (Parallel High Resolution Imaging of Diffuse
Objects in the LMC)
The WF/PC-2 was used to observe diffuse object LMC-LM1-8. Of
particular interest were H II regions, planetary nebulae, SNRs,
supershells, and proto-stellar and maser regions. The observation
completed normally with report of any errors.
1.7 Completed WF/PC-2 5397 (Determination of the Extragalatic Distance
Scale: Cycle 4 High)
The WF/PC-2 was used to make images of galaxy NGC-925 to be used
in measuring the periods of Cepheid variable stars within the
galaxies. One recentering event which lasted for a total of four
seconds was reported, but no other anomalies were noted.
1.8 Completed WF/PC-2 5571 (Cycle 4 Calibration: Earth Flats, Small Set)
The WF/PC-2 was used to make several ultraviolet and narrow-band
filter
Earth flat calibration observations to correct for the telescope's
illumination pattern. The observations were completed as planned,
and
no problems were reported.
1.9 Completed Four Sets of FOS/BL 5444 (A UV Spectral Library of Metal-
Poor Massive Stars)
The FOS (Blue Side) was used for a snapshot program to obtain UV
spectra of NS60-70, AV61, NS69-70, and AV14, all metal-poor stars
in the LMC. It will be useful for stellar atmosphere and stellar
evolution studies. The observations completed without incident.
1.10 Completed WF/PC-2 5560 (Cycle 4 Calibration: Internal Monitor 1)
The WF/PC-2 was used to make several internal bias, K-Spot, and flat
calibration observations to monitor the CCD camera electronics, the
optical alignment, and to check for contamination. The observations
were completed as planned, and no anomalies were noted.
1.11 Completed WF/PC-2 5751 (Understanding the Geminga (1E0630+178)
Optical Counterpart Cycle 4 - H)
The WF/FC-2 was used to obtain images of 1E060+178, the optical
counterpart of neutron star GEMINGA. The images will be used to
determine the parallax of the target to get an estimate of its
distance. The observation was completed as planned, with no
reported problems.
1.12 Completed Two Sets of WF/PC-2 5568 (Cycle 4 Calibration: Decon)
The WF/PC-2 was used to make an internal flat field calibration
observation using the VIS lamp and the internal source as part of a
decontamination operation. The observations were completed as
planned,
and no problems were reported.
1.13 Completed Two Sets of WF/PC-2 5476 (Continuum Snapshots of 3CR
Radio Galaxies)
The WF/PC-2 was used to make snapshot images of radio galaxy 3C231.1
as part of a continuum survey and to study the galaxy's morphology.
The
observations were executed as scheduled, and no anomalies were
noted.
1.14 Completed WF/PC-2 5753 (The Supernova Intensive Study)
This proposal is part of a continuing project to study the
development of supernovae and their circumstellar matter. In this
case, LMC-SN1987A was observed. The observation completed normally,
and there were no reported problems.
1.15 Completed FGS 5134 (Extragalactic Astrometry and Astrophysics
FT12-23)
The FGSs were used to make astrometric observations of five
different
stars to tie the HIPPARCOS and extragalactic reference frames
together.
The targets in this set of observations were successfully acquired
and
observed. The observations were reported to be nominal.
1.16 Completed FOC/96 5148 (A Search for Massive Stars in Giant III
Regions in M31)
The FOC/f96 observed BA379, a HII region of various metallicities in
M31. Color magnitude diagrams will be constructed for the massive
stars within the region, and the upper mass cutoff will be studied,
adding to the understanding of star formation. The observation was
completed with no reported problems.
1.17 Completed WF/PC-2 5092 (Low Latitude Parallel Program)
The WF/PC-2 was used to make observations taken in parallel with the
prime science observations. This is part of a survey to take
pictures
of a large number of fields within 30 degrees of the galactic plane.
The
observations were completed as planned, and no problems were
reported.
1.18 Completed FOS/RD 5532 (Dark Monitoring)
The Faint Object Spectrograph (Red Side) was used to monitor
the instrument's background (dark) images. The observations were
executed as scheduled, and on anomalies were noted.
1.19 Completed FOS/RD 5631 (A New Size Constraint on Lyman Alpha Clouds)
The FOS (Red Side) was utilized to view LB9605 to observe a pair of
quasars separated by about one arcsecond, and one member of a second
pair, with the expectation that constraints can be put on the scale
of the absorbers which produce spectral lines in the Lyman Alpha
forest. One recentering event occurred, and the FOS continued
to expose during the event. No other problems were reported.
1.20 Completed FOS/BL 5530 (Location of Spectra and Aperture)
The Faint Object Spectrograph (Blue Side) was used to make Y-base
maps
of the FOS detectors using internal lamps. The purpose is to
determine
the location of the spectra on the diodes. The observations were
executed as scheduled, and no anomalies were noted.
1.21 Completed FGS 5135 (Extragalactic Astrometry and Astrophysics
FT0-11)
The FGSs were used to make astrometric observations to obtain data
needed to measure the HIPPARCOS reference frame with respect to the
extragalactic reference frame. The observations were executed as
scheduled, and no anomalies were noted.
1.22 Completed WF/PC-2 5091 (High Latitude Parallel Program)
The WF/PC-2 was used in parallel with the prime science observations
to make high galactic latitude observations greater than +/-30
degrees.
The observations were executed as scheduled, and no problems were
reported.
1.23 Completed WF/PC-2 5114 (Stellar Formation and Evolution (WC14))
The WF/PC-2 was used to make multi-color observations of object
R136.
The structure of the HH object will be determined on smaller scales
than is possible from ground based observations. The observations
were completed as planned, and no problems were reported.
1.24 Completed HRS/1 5671 (Dark Noise Monitor - Cycle 4)
The High Resolution Spectrograph (Side One) was used to make dark
calibration images. These were strictly internal tests for routine
monitoring of detector dark noise. The observations were executed as
scheduled, and no anomalies were noted.
2.0 FLIGHT OPERATIONS SUMMARY:
2.1 Guide Star Acquisitions:
Scheduled Acquisitions : 17
Successful : 17
Scheduled Reacquisitions : 22
Successful : 22
2.2 FHST Updates:
Scheduled : 24
Successful : 24
2.3 Significant HSTARs: None
2.4 Operations Notes:
During the three-day weekend period, there were no significant
problems encounterd in any HST susbsytem.
3.0 ANOMALY STATUS:
3.1 Significant New Anomalies: None
3.2 Significant Unresolved Anomalies: None
4.0 SIGNIFICANT FORTHCOMING EVENTS:
Nothing at this time.
/CAW -END-